Default SSL context init failed : null

[[EMAIL PROTECTED]]

Dear,
   
 Really need some help here, I am totally new with Jmeter , currently I am 
using version 2.2 to stress test my https pages containing login form. 
Unfortunately, it giving me error messages like follows. 
   
  
  <responseData class="java.lang.String">java.net.SocketException: Default SSL 
context init failed: null&#x0D;
 at javax.net.ssl.DefaultSSLSocketFactory.createSocket(Unknown Source)&#x0D;
 at sun.net.www.protocol.https.HttpsClient.doConnect(Unknown Source)&#x0D;
 at sun.net.www.http.HttpClient.openServer(Unknown Source)&#x0D;
 at sun.net.www.http.HttpClient.openServer(Unknown Source)&#x0D;
 at sun.net.www.protocol.https.HttpsClient.&lt;init&gt;(Unknown Source)&#x0D;
 at sun.net.www.protocol.https.HttpsClient.a(Unknown Source)&#x0D;
 at sun.net.www.protocol.https.HttpsClient.a(Unknown Source)&#x0D;
 at sun.net.www.protocol.https.HttpsClient.a(Unknown Source)&#x0D;
 at 
sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.plainConnect(Unknown
 Source)&#x0D;
 at 
sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown 
Source)&#x0D;
 at 
com.sun.net.ssl.internal.www.protocol.https.HttpsURLConnectionOldImpl.connect(Unknown
 Source)&#x0D;
 at 
org.apache.jmeter.protocol.http.sampler.HTTPSampler.sample(HTTPSampler.java:406)&#x0D;
 at 
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:658)&#x0D;
 at 
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:647)&#x0D;
 at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:247)&#x0D;
 at java.lang.Thread.run(Unknown Source)&#x0D;
     

  Notes:
    
   https was work once very well, after restarting Jmeter and it doesn't work 
anymore which actually I use the same sampler with the previous one.Jmeter did 
not hit my application at all while I see my access log file.
  
   Working fine for http page and static page.
  Thank you very much in advance.
   
   Best Regards,


                                
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